Berries Production Guide

Weeds

NEW PLANTINGS

Devrinol 10G
(10% napropamide)

Devrinol 50 DF or Devrinol DF-XT (50 % napropamide)

45 to 67 kg/ha
(18 to 27 kg/acre)

9.0 to 13.4 kg/ha (3.6 to 5.4 kg/acre)

For control of annual grasses including rice cutgrass and sedges Apply in late winter or early spring - fall application is prohibited. Irrigate to wet the soil to a depth of 10 cm if rain does not occur after treatment

Callisto 480SC
(480 g/L mesotrione)

Pre-emergent and early post-emergent

or

Late post-emergent

300 mL/ha
(120 mL/acre)

210 mL/ha
(84 mL/acre)
Add Agral 90 at 0.2% v/v

For control of lamb’s-quarters, red root pigweed, wild mustard and eastern black nightshade.

For suppression of vetch and creeping buttercup.

Make only one application per year at the 300 mL/ha (120 mL/acre) rate.

If using the post-emergent rate of 210 mL/ha (84 mL/acre), a second application may be made after at least 14 days to improve control of difficult weeds.

Use only ground boom equipment. Do not apply by air. Do not apply by hand.

Do not apply through irrigation equipment.

For bearing beds, apply between bud break and fruit set.

Do not flood within 60 days of treatment.

Do not apply directly to water or areas where surface water is present.

Do not apply if rainfall or sprinkler irrigation for frost protection is expected within 48 hours.

Do not apply within 60 days of harvest.

Casoron G4
(4% dichlobenil)

90 to 110 kg/ha
(36 to 45 kg/acre)
(split treatment)

For control of grasses, sedges, broadleaved weeds and Bracken fern.

Apply in early spring as a split treatment, 2 applications 3 to 6 weeks apart for a total of 175 to 225 kg/ha (70 to 90 kg/acre).

Do not use on new plantings or newly sanded beds.

Temporary reddening of cranberry plants may occur if treatment is delayed until late spring.

Do not apply after plants start to bloom.

Use low rate on sandy soils and irrigate after application.

Devrinol 10G
(10% napropamide)

Devrinol 50 DF (50 % napropamide)

45 to 67 kg/ha
(18 to 27 kg/acre)

9.0 to 13.4 kg/ha (3.6 to 5.4 kg/acre)

See instructions under NEW PLANTINGS above.

Centurion or Select
(240 g/L clethodim)

0.19 to 0.38 L/ha (.076 to 0.15 L/acre)

For control of annual grasses and quackgrass.

Apply to actively growing grass at the 2-6 leaf stage.

Do not apply between the hook stage and full fruit set

Apply no more than once per year.

Apply the adjuvant, Amigo, at a rate of 0.5 to 1 % of water volume used.

Do not apply within 30 days of harvest

Poast Ultra
(450g/L sethoxydim)

1.1 L/ha
(400 mL/acre)

For control of quackgrass and annual grasses • Apply to actively growing grass that has 1-6 leaves.

Apply with the adjuvant, Merge, at a rate of 1% of water volume used.

Do not apply within 60 days of harvest.

Agricultural Weedkiller #1 (100% mineral spirit)

3,500 to 16,000 L/ha (1420 to 6480 L/acre)

For control of cottontop and partial control of cloudberry apply 12,000 to 16,000 L/ha (4860 to 6480 L/acre) to infested spots prior to cranberry bud break.

For control of annual grasses, sedge, Bracken fern and broadleaved seedlings apply 3500 to 5000 L/ha (1420 to 2025 L/acre). Apply in March to early April before bud elongation and repeat as necessary.

ESTABLISHED PLANTINGS: WICK (WIPE-ON) TREATMENTS ONLY

Roundup
(356 g/L glyphosate)

20% solution (1 L / 4 L water)

For control of annual and perennial weeds growing above the crop.

Apply as a wipe-on treatment only after fruit set.

Do not contact cranberry leaves or fruit.

Avoid applications in the heat of the day.

Apply only once per year.

Do not apply Roundup formulations within 30 days of harvest. Note: The above rate is based on a formulation with 356 g/L glyphosate. There are many new formulations of glyphosate on the market with varying active ingredient concentrations. Be sure to check the label for application rate.

Lontrel 360
(360 g/L clopyralid)

2% solution (80 ml / 4 L water)

For control of vetch.

Application with wiper type equipment can be made in the fall at least 2 weeks after harvest (vines have winter dormancy colour), in the spring prior to budbreak or after budbreak to control late germinating weeds.

Apply no more than twice per year.

Avoid contacting cranberry leaves.

Do not apply within 60 days of harvest.

Nufarm 2,4-D
Amine 500

33% solution (2 L / 4 L water)

For control or suppression of annual and perennial broadleaved weeds including hardhack, St. Johnswort, alder and purple aster.

Apply with wiper type equipment to actively growing weeds in June or July.